Locomotive cylinder structure



June 22 1926.

F. I. BIRD ET AL LOCOMOTIVE CYLINDER- STRUCTURE Filed Nov. 23, 1925 Patented Tune 22, 1926.

UNITED STATES PATENT QFFECE.

FRANK I. BIRD, OF 'BERWYN, AND HENRY K. HABWIGK, Q16 IQHILADELQ X-HA, PENN- SYLVANIA, ASSIGNORS TO THE BALDWIN LOCOMOTIVE WORKS, 031 LLi'TILAKI-EL- PI-IIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

LOOOMOTIVE CYLINDER STRUCTURE.

Application filed. November 23, 1925.

One object of our intention is to reduce the number of cores in making a cylinder saddle, in order that the saddle may be made of cast steel.

A. further object of the invention is to make the exhaust passages separate from the cylinder saddle castings, and to so arrange the pipes forming the passages that they can be located side by side at the central exhaust nozzle.

In the accompanying drawing:

Fig. l is an end view of a cylinder saddle ot a locomotive partly in section and illustrating our invention;

Fig. 2 is a plan view partly in section on the line 22, Fig. 1;

Fig. 3 is a sectional view of the two exhaust pipes on the line 33, Fig. 1;

Fi g. t is a detached side view of one of the exhaust pipes; and

Fig. 5 is a view illustrating a m0diflcation 0t our invention.

The cylinder saddle 1 in the present instance is made in two sections 22, bolted together to form a rigid structure, having flanges 3 at the lower end to fit the frame of a locomotive, and having a curved seat 4: for the support of the boiler.

The body of each section is in the form of an open frame work without cored steam or exhaust passages.

Cast integral with each saddle section in the present instance is a cylinder 5 and a valve-chest 6 connected by the usual passages. The steam inlet passage is shown at 7 connecting with the valve-chest at its center. The exhaust passage 8 extends parallel with the valve-chest and communicates therewith at each end, and at its center with a separate exhaust pipe 9 Whitll extends through the saddle and communicates with the exhaust nozzle 10 at the center of the saddle.

The casing for the exhaust passage 8 is an integral part of the saddle casting, but terminates outside of the body portion of the saddle, as shown in Fig. 1, obviating the necessity of making elaborate cores and molds for the saddle section, and thus allowing the saddle section to be made of caststeel.

Each pipe 9 is curved at its upper end as shown in Fig. 1, and the cross-section is changed from a circle at the exhaust pas- Serial No. 70,891.

sage 8 to a halt-circle at the nozzle. By this means the two pipes leading from opposite s'des ot" the saddle can be located side by side at the nozzle, and can be readily coupled to a cylindrical nozzle as shown.

Each pipe 9 has a wide semi-circular an" 'llltl) secured to the upper end ole by bolts or other iastenings, jecting from the semi-circular flange t'crated for the reception together with th Fach pipe has a hal cured to the lower flange zle 10.

The pipes 9 have flanges 16 at their lower ends which are secured to flanges 15 on the casing of the exhaust passage 8. The flanges 16 are loose on the pipes 9, and are in the form of rings. When the pipes 9 are located in position, the wide flanges 11, forming integral parts of the pipes 9, are secured to the saddles, after which the ring flanges 16 are secured to the flanges 15, so as to insure a tight joint, after which the ring flanges are secured to the pipes preferably by welding.

By using two pipes 9 and shaping them as shown, they can be readily inserted through the openings in the saddle section and secured in position, after which the nozzle 10 can be located and secured to the two pipes.

In some instances, the pipes may be made in the form of short straight sections 9, and secured to a central section 9 flanged as shown in Fig. 5. In this construction, the exhaust passage is cylindrical throughout.

We claim:

1. The combination of a cylinder saddle having cylinders and valve-chests; an exhaust passage formed in the casting of the valve-chest outside of the body of the saddle; separate exhaust pipes communicating with the exhaust passages and extending through the saddle; and a nozzle on the saddles communicating with said pipes.

2. The combination of a cylinder saddle made in two sections bolted together, each section being a steel casting having an open body portion and an integral cylinder and valve-chest; an independent pipe extending through the body portion and coupled to the valve-chest; and a nozzle with which both pipes communicate.

. l of the noz- 3. The combination of a saddle made in two sections bolted together, each section being a steel casting having an open body portion and an integral" cylinder and valvechest; a pipe extending from each valvechest through the body of the saddle and to the center thereof, the pipes being arranged side by side at the center of the saddle; and a nozzle to which the two pipes are coupled, the passage in the pipe being semi-circular in cross-section at the nozzle and cylindrical at the valve-chest.

4E. The combination in a cylinder saddle, of two sections secured together, each section having an open body portion free or" cored inlet and exhaust passages; a cylinder and valve-chest at each side of the saddle; outside steam connections for the valve-chests; a central exhaust nozzle; and pipes extending through the bodies of the saddle sections, connected at their outer ends with the valvechests and at their inner ends with the exhaust nozzle.

5. The combination of a cylinder saddle;

independent exhaust pipes extending through the body of the saddle and arranged side by side at the center thereof, each pipe having a half-flange secured to the saddle and an upright flange; means coupling the two flanges; and a nozzle mounted on the ends of the pipes and common to both pipes.

6. The combination of a cylinder saddle; an exhaust pipe having means by which it is secured at one end to the saddle; and a flange-ring loosely mounted on the opposite end of the pipe and arranged to be welded to the pipe after it is secured to a flange on the saddle.

7. The combination of a cylinder saddle; and independent exhaust pipes extending through the body of the saddle and arranged side by side, each pipe having a flange secured to the saddle and having a movable flange-ring at its opposite end which when coupled to adjoining flanges is welded to the pipes.

FRANK I. BIRD. HENRY K. HARVVIGK. 

